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This kind of machine five years ago and it is still in good condition. A. began

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This kind of machine five years ago and it is still in good condition. A. began

This kindof machine ________________ five years ago and it is still in good condition.

A. beganto use      

B.  put to use

C.  was using   

D. came into use

 

试题答案

答案:D

提示:

固定短语,“开始投入使用”。